Microcontroller with firmware selectable oscillator trimming
US5796312A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | May 24, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A microcontroller circuit having firmware selectable oscillator trimming includes, in combination, a microcontroller, an oscillator located within the microcontroller for providing a system clock signal for the microcontroller, and a memory portion for providing trimming data to the oscillator for trimming frequency of the system clock. The microcontroller circuit includes microcontroller logic which has the trimming data stored therein for transfer to the memory portion. Additionally, the microcontroller logic permits the user to alter the trimming data after it has been transferred to the memory portion, thereby permitting the user to alter the amount of modification of the system clock frequency from the amount associated with the trimming data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.